2000 · G. Grispos, A. P. Contogouris, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 4
1996 · A. P. Contogouris, Z. Merebashvili, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields